The machine is very user friendly! Though they have customer service agents who helped me on the manual, but when I tried it myself, the modes are very easy to understand and with all curiosity, I tried them all and so far they are all working for me. Thanks to the tip given to me by the agent on checking how the 40K head is working and thank you for the manual as well. Now I can effectively explain some of the technicalities to my friends and families.